Dust-collector for pneumatic street-sweeping machines.



J. R. POLLOCK.

DUST COLLECTOR FOR PNEUMATIC STREET SWEEPING MACHINES.

APPLICATION FILED AUG.26, 1914- Patented Sept. 28, 1915.

2 SHEETS-SHEET I.

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J. R. POLLOCK.

DUST COLLECTOR FOR PNEUMATIC STREET SWEEPING MACHINES. APPLICATION FILED AUG-26, 1914.

1,155,272. Patented Sept. 28, 1915.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH c0..w/\SH1NGToN. u. c.

Warren s -T as ron.

JOHN R. r'oLL'ocK, or Lone'isnnoi-r, CALIFORNIA.

DUST-COLLECTOR Eon rlvnrnue'rrc sainnnr swnnrme MACHINES.

To all whom it may concern:

Be it known that 1; JOHN R. PoLLooK, a citizen of the ll nited States, residing at the city of Long Bea'clnin the county of Losringeles and State of California, have invented. new and usefulImprovements in Dust-Collectors for Pneumatic Street-Sweeping Machines, of which the following is a specification. y

My invention relates to animprovement on that certain street sweeping machine for which Letters Patent were'issued to me De cember 1 1:, 1909, No. 943,122 and the object thereof isto remove more of the dust from the air than is possible by theinechanisin described in said patent.

In the drawings forming a part of this are illustrated as have been improved.

in said patent.

In the drawings Figure 1 1s a perspectwe view of my improved machine. Fig.2 is a' side elevation, partly broken away, of the rear portion of the body of the machine. F 3 is a longitudinal horizontal section on the line 3-3 of Fig. 2. Fig. at is a vertical cross section on the line 4-4 of Fig. 2. Fig. 5 is a rear end elevation of the air purifying chamber.

In the drawings is the flexible pipe of my former patent which runs from the suction head 5 of the machine and opens into the front end of the dirt chamber 6. 7 is an exhaust fan. The suction port of this fan is connected by pipe 8 with the dirt chamber. These parts except the dirt chamber are situate and operated as described in said patent. Dirt chamber 6 extends to the rear end of the machine and is separated from the purifying chamber 9 by a partition 10 that slopes downwardly and rearwardly to the rear end of and extends across the body 11. A hood 12 with a sloping top is mounted in the dirt chamber over the inlet from pipe 5 and a like hood 13 is mounted in the dirt chamber over the outlet to pipe 8. The sides of these hoods extend preferably about half way down. the said inlet and out-let which are at the top and front end of the dirt chamber. The rear end of the dirt chamber is closed when the machine is in operation by a door 14: which is preferably hinged at the top thereof by hinges 15 to the top of the body and is fastened by any Specificationof Letters Patent. Patented Sept, 28, 1915, Application filed August 26, 1914. ,SerialNo. 858,619.

appropriate fastenings (not shown). The

discha rge port of the fan is connected by conduit or pipe 16 with the centralportion of the front end of the water chamber 17 which runs to the rear of the machine below thedirt chamber. The rear end. of the water chamber is closed by" door 18 which is connected at the top by hinges 19 to partition 10. It is suitably secured by fastenings (not shown) when the machine is in use. 1

The lower portion of the side walls of the water chamber preferably slope inwardly to reduce the size of the chamber as shown in Figs. 3 and 4. Projecting downwardly from partition 10 into the water chamber are vertical deflectors 20 and 21 which extend so close to the bottomofthe chamber that when the machine is charged with the required amount of water 22 the lower edge of these deflectors will extend into the water about one inch. Pipe 16 opens into the chamber between these deflectors. Air channels 23 and 24: are formed at the sides of the dirt chamber by partitions 25 and 26 which are connected to the sides of the body and to partition 10 as best shown in Fig. 3. These air channels extend the full length of the body and at their front ends are connected by ports in partition 10 with the water chamber between the sides of the body and the deflectors in said chamber. One of the ports 27 is shown in Fig. 1. Immediately below these ports are bafile shelves, one of which 28 is shown in Fig. 2. These shelves prevent the spray from entering the air channels too freely for good work. At a short distance from the rear end of the body arethe air discharge pipes 29 which open out from the air channels and turn upwardly and discharge the air at or near the top of the body.

By this construction it will be observed that the dirt and water chambers are the full length and width of the body thereby giving the dirt a better opportunity to settle and a better opportunity to take the dust out of p LThe' Water chamber is charged with Water through a'port covered by a cap 30.

Having described my invention What I claim is 1. In a pneumatic, streetsweeping machine means to purify the airof dirt and' dust comprising a body having a dirt cham-'" ber in 'the upper portion thereof, said chamber having an inlet portend anoutlet' port atthe fron'tend thereof and a bottom sloping downwardly and rearwardly and a door forming' the rear end thereof; air channels at thesides or said dirt chamber; a' water chamber below the dirt chamber having a door forlning'the rearend thereof andp orts in the toplswalhatqthe front end thereof opening into the air channels; longitudinhl deflectors depending "from the top Wall of said Water chamber and projecting into the Water when said machineis charged for use; air delivery pipes connected to the air channels near the rear endsof said channels; in combinationwith,means to draw air out of the front end Offth dirt chamber and de Copies of this p aten t may be obtained'ior liver it intol the front end olf the Water chamber between the deflectors 2. In a pneumatic street sweeping maohinefa dirt chamber having a port in the front end thereof; awater chamber below the dirt chamber, said chamber havlng a door, forming thefrearend thereof; a conmotion between said" chambers; air channels at the sides of thedirtchamber having ports opening into the front end of thewater chamber; discharge pipes connected to said "air channels nearthe rear ends thereof; and

deflectors dopendii gfrom the top Wall of the Water chamber ancbprojecting downwardly 'into the aterwhen the mac ine is ready for nse; in combinationn'ith means to cause'lthe travel; ofair through said chambers; r

In Witness that claim} the foregoin g l have hereunto subscribed my name this 27th day of July, 1914.

' Y- JOI-IN RQPOLLOCK;

Witnesses: v I i G, E. HARrqA B m ni TATERFIELD.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

